• Parth Pramod Raundal
• Aniket Anil Bhavsar
• Siddhant Dinesh Sonawane
• Rushikesh Sanjay Khaire
• Prof. Smita T. Patil

Amongst the most fundamental ideas that has been essential to humanity's progress is the notion of being healthy and staying healthy. Keeping the public healthy and active is a huge task, but it is essential if we want to realize the benefits of improved productivity in other areas. To improve the healthcare paradigms, physicians as well as other healthcare practitioners have an already difficult challenge that is only likely to grow more so as time goes on. Nevertheless, one such architecture is the Electronic Health Record (EHR) concept, which allows data on a patient's many attributes and the treatment they have received to be compiled in one place. The idea of an electronic health record (EHR) is very useful for doctors since it allows for more exact diagnosis and treatment. The difficulty arises when one patient exhibits non-typical symptoms and factors. It is a significant problem when a doctor has to resort to experimenting just to figure out what is wrong with a patient. Because of this, there must be a secure means through which medical professionals may share data contained in electronic health records. AES Encryption, Blockchain, Cloud Storage, and Bit Mapping are used in the suggested method to realize efficient security of EHR's in a medical infrastructure.

Internet of Medical Things, Public Cloud, Medical Health Records, Cryptography, Search over encrypted data.

"Decentralized E-Health Records Using Blockchain.", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.10, Issue 5, page no.e563-e568, May-2023, Available :http://www.jetir.org/papers/JETIR2305478.pdf

"Decentralized E-Health Records Using Blockchain.", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.10, Issue 5, page no. ppe563-e568, May-2023, Available at : http://www.jetir.org/papers/JETIR2305478.pdf